Devtools
Devtools
| List of tools tagged as Devtools |
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CSS Border Radius Generator
Generate border-radius CSS from circular or elliptical corners, preview box-fit scaling, and copy CSS, Tailwind, or token output.
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CSS Box Shadow Generator
Build CSS box-shadow stacks with editable layers, live surface previews, CSS token outputs, and layer checks for elevation, inset, or glow effects.
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CSS Flexbox Generator
Build flexbox CSS for responsive rows, columns, wrapping, gaps, and child sizing with live previews, property notes, and starter HTML.
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CSS Grid Generator
Generate CSS Grid rules from a selector, strategy, gaps, and alignment, with live previews, fit projections, scaffold markup, and ledgers.
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JSON Schema Generator
Generate JSON Schema from sample JSON, choose draft and inference rules, and review property ledgers before copying a validator-ready draft.
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README Generator
Draft a repository README from project facts, setup commands, usage examples, license choices, readiness checks, and follow-up file tasks.
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Test Data Generator
Generate repeatable synthetic test data from field recipes and seeds, with CSV, JSON, NDJSON, SQL output and recipe quality checks.
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Web App Manifest Generator
Generate a web app manifest with launch URLs, scope checks, install markup, icon asset ledgers, and warnings for PWA install readiness.
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.env File Generator
Generate reviewed .env and .env.example files from pasted rows or a small text file, with duplicate checks, quote guidance, and masked secret previews.
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.gitignore Generator
Draft a repository-ready .gitignore with stack, OS, editor, secret, and exception rules, plus warnings for broad or duplicate patterns.
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.gitignore Pattern Coverage Checker
Check whether .gitignore rules cover generated and sensitive repository paths, with gate metrics for negations, tracked files, gaps, and review actions.
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API Key Generator
Generate API keys in your browser with public lookup IDs, entropy targets, SHA-256 storage hashes, and sensitive-batch warnings.
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API Pagination Window Calculator
Plan an API pagination window from item count, page size, rate limits, latency, workers, retry reserve, and payload risk checks.
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Acceptance Criteria Generator
Draft acceptance criteria from a story, actor, behaviors, and edge cases, then review Gherkin scenarios, checklist gaps, and JSON exports.
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Application Log Pattern Analyzer
Analyze application log excerpts in your browser, group repeated failure patterns, and review severity counts, time buckets, and triage rows.
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Application Programming Interface (API) Testing Tool
Test browser-visible HTTP API requests with cURL import, auth, body modes, CORS failure clues, response traces, and local saved presets.
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Attenuator Pad Calculator
Design a matched Pi or T attenuator pad, compare exact and preferred resistor values, and check power dissipation before choosing parts.
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Avro Schema Compatibility Validator
Compare released and proposed Avro schemas by mode, with field-level blockers for defaults, aliases, unions, logical types, and registry-ready notes.
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Base64 Encoder and Decoder
Encode or decode Base64 text and files in your browser, inspect recovered bytes, repair padding, and create URL-safe or Data URL output.
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Binary Decimal Hex Converter
Convert binary, decimal, hex, octal, and Base36 integers with signed-width checks, bit fields, endian previews, and byte-level output.
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Bitwise Operations Calculator
Calculate fixed-width bitwise masks, shifts, rotations, flag tests, signed readouts, and bit-lane changes with binary and hex checks.
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Bug Report Generator
Draft a tracker-ready bug report with Markdown, triage fields, a reproducibility checklist, and local privacy-pattern warnings before filing.
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Build Artifact Storage Calculator
Estimate retained CI artifact storage from build cadence, retention, active refs, compression, caches, reserve, and quota headroom.
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CI Failure Log Analyzer
Analyze a failed CI job log, rank line-numbered failure clues, group stages, suggest next checks, and mask secret-like snippets before sharing.
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CODEOWNERS Coverage Analyzer
Check CODEOWNERS coverage for a pull request, spot missing, ownerless, or catch-all ownership gaps, and export a review-ready fix queue.
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CSS Gradient Generator
Build CSS gradients with draggable stops, live geometry, modern color-space options, syntax checks, and copy-ready CSS output.
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CSS Minifier
Minify CSS in your browser, preserve token-sensitive syntax, compare byte savings, and review parser, source-map, and compatibility warnings.
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Case Converter
Reshape headings, identifiers, filenames, and slugs into 13 case styles with line scope, acronym handling, and accent-folded code output.
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Changelog Generator
Draft a release changelog from notes, Markdown sections, or Conventional Commit subjects with category grouping, SemVer review, and copy-ready Markdown.
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Comma-Separated Values (CSV) Converter
Convert CSV-like text into clean tables, profiles, JSON, SQL, XML, and spreadsheet-ready exports while checking headers and row shape.
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Conventional Commit Messages Checker
Check Conventional Commit headers or full messages, catch rule findings, and map valid commits to major, minor, patch, or no release impact.
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Credit Card Number Generator
Generate Luhn-valid sandbox card numbers with optional CVV, expiry, BIN/IIN prefixes, masking, seeded replay, and prefix mix reports.
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DOCX Converter
Convert a DOCX in your browser to clean web, text, table, EPUB, and audit outputs with local processing, image controls, and package warnings.
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Dependency License Flags Checker
Check dependency license evidence against allowed, review, and denied policies with SPDX expression triage, scope filters, and action queues.
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Dependency Update Risk Analyzer
Triage dependency update rows by SemVer, runtime scope, security status, tests, and compatibility, then export owner-review queues and charts.
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Docker Compose Generator
Build Docker Compose YAML for one service, with image/build choices, port exposure, .env secret references, healthchecks, networks, and review notes.
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Dockerfile Generator
Build a Dockerfile and .dockerignore for Node.js, Python, Go, or Java services, with cache mounts, healthchecks, and hardening review notes.
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Duplicate Line Remover
Clean a one-entry-per-line list in your browser, remove repeats with case and whitespace rules, and audit kept or dropped rows.
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ENV Converter
Convert .env files to YAML, JSON, runtime env, INI, and properties output with parser traces, expansion checks, and secret-like value review.
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Environment Variable Inventory Checker
Audit required environment variables against pasted or uploaded inventories with redacted missing, blank, placeholder, duplicate, and secret-like findings.
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Extensible Markup Language (XML) Converter
Convert XML into JSON, JSON Lines, tables, SQL inserts, and formatted XML with local parsing, record-path checks, and schema review.
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Favicon Generator
Turn one logo into favicon PNGs, favicon.ico, HTML links, and manifest icons with local rendering, size checks, previews, and ZIP download.
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Feature Flag Cleanup Checker
Review feature flag inventories in your browser for stale rollouts, code references, owner gaps, dependencies, and archive-ready cleanup work.
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File and Disk Size Converter
Convert file or disk sizes across decimal and IEC units, then estimate usable space, allocation slack, and common storage fit tiers.
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Filebeat Grok Pattern Generator
Turn one representative log line into a Filebeat-ready Grok pattern with ECS field mapping, sample-match checks, and optional ingest pipeline JSON.
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Fuel Efficiency Converter
Convert MPG (US), L/100 km, and km/L with direction cues, warning checks, rounded equivalents, and a charted consumption curve.
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Git Branch Staleness Analyzer
Audit Git branch inventories locally with age, merge, protection, ahead/behind, and gone-upstream signals before deleting stale branches.
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Git Diff Risk Analyzer
Analyze Git diff summaries before review, scoring churn, sensitive paths, deletions, generated files, and binary rows into a reviewer queue.
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GitHub Actions Matrix Generator
Build a GitHub Actions matrix workflow with runner and runtime axes, cache choices, exception rows, and review checks before committing.
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GraphQL Formatter
Format GraphQL queries, fragments, and schema SDL locally, with compact persisted-query text, definition inventory, and warning checks.
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Gzip Compression Checker
Check gzip, Brotli, or identity compression for a URL or pasted headers, with cache-variation clues, byte-savings evidence, and request recipes.
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Gzip Text Decompressor
Decompress gzip, zlib, or raw deflate text in your browser from Base64, Base64URL, hex, escaped bytes, or local files with byte evidence.
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HCL Converter
Convert Terraform-style HCL into JSON, YAML, env, INI, properties, and path ledgers with browser-local parsing and schema drift checks.
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HMAC Generator
Generate HMAC signatures in your browser from text or local files, then compare expected headers with SHA choices and byte encodings.
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HTML Boilerplate Generator
Build an HTML starter document with title, language, metadata, asset paths, and review notes before copying full-page or head markup.
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HTML Entity Lookup
Look up an HTML entity, symbol, name, or code point, then compare named, numeric, Unicode, and context-safe paste forms for markup or code.
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HTML Escape and Unescape Tool
Escape HTML snippets for text or attributes, decode nested entities in your browser, and review a transform ledger plus copy-safety warnings.
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HTML Minifier
Compress pasted HTML locally, see saved bytes, and catch comment, raw-text, inline-spacing, and attribute-shortening risks before copying.
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HTML Tag Stripper
Turn pasted HTML, emails, or page fragments into browser-local plain text with scope choices, link checks, alt-text handling, and ledgers.
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HTML Unescaper
Decode escaped HTML text or small files in your browser, inspect each entity change, and flag unresolved references or script-shaped output.
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HTML to JSX Converter
Turn pasted HTML or SVG into React-ready JSX with local parsing, attribute migration rows, style-object handling, and event warnings.
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HTML to Markdown Converter
Turn HTML fragments, articles, or page exports into readable Markdown with dialect controls, table fallback warnings, and local review exports.
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Heatsink Thermal Resistance Calculator
Size a heat sink from power, ambient, junction limit, interface loss, and airflow context with C/W targets, margins, and charts.
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Helm Values Schema Validator
Validate values.yaml against values.schema.json, find Helm-style schema failures, coverage gaps, hygiene warnings, and a CI snippet.
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Hreflang Tag Generator
Build hreflang clusters from locale and URL rows, then copy head tags, sitemap XML, or HTTP headers with self-reference audits.
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INI Converter
Convert INI or CFG text into JSON, YAML, env text, Java properties, and normalized INI with duplicate-key, skipped-line, and type checks.
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IP Address to Decimal Converter
Convert IPv4 addresses between dotted, decimal, hex, binary, octal, and mapped IPv6 forms with range labels and byte-order checks.
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JSON Converter
Turn JSON or JSON Lines into clean tables and handoff files with record-path selection, flattening controls, and precision warnings.
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JSON Diff Comparator
Compare JSON payloads as parsed structures, find path-level changes, tune array matching, ignore noisy fields, and export review evidence.
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JSON Formatter
Turn messy JSON into readable, compact, sorted, or line-delimited output with duplicate-key, size, and number-precision warnings in your browser.
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JSON Repair Tool
Repair broken JSON-like text into strict JSON locally, then review the ledger, structure audit, and precision warnings before copying.
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JSON Schema Breaking Changes Checker
Compare released and proposed JSON Schemas, flag required-field, type, enum, constraint, closure, and local-reference risks before release.
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JSON Sorter
Sort JSON into repeatable key order in your browser, clean JSONC drafts, flag duplicate names, and review paths before copying output.
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JSON Validator
Validate JSON, JSONC, JSON5, or JSON Lines in your browser, then catch syntax errors, duplicate keys, unsafe numbers, and root-shape issues.
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JSON to CSV Converter
Turn nested JSON or JSON Lines into spreadsheet-ready CSV or TSV, with record-path selection, flattened headers, previews, and formula warnings.
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JSON to TypeScript Converter
Generate TypeScript declarations from JSON or JSON Lines samples, with optional-field evidence, null policies, guard code, and review notes.
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JSON-LD Generator
Draft JSON-LD for Article, Product, Organization, and FAQ pages with page-match audit rows, property ledgers, and copy-ready script output.
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JSONPath Tester
Test JSONPath selectors on pasted or loaded JSON, compare matched values with paths and JSON Pointers, and catch filter or syntax issues locally.
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JUnit Test Report Analyzer
Analyze JUnit XML from CI runs in your browser with pass-rate gates, failure triage, retry clues, skipped cases, and slow-test flags.
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JWT Decoder
Inspect a compact or Bearer JWT locally, read claims, and review timing, issuer, audience, signature, TTL, and sensitive-claim warnings.
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JavaScript Minifier
Minify JavaScript locally, compare raw and gzip savings, and catch syntax, module-scope, comment, console, and source-map risks.
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Key-Value Config Converter
Convert INI, .properties, or .env text into JSON, YAML, properties, INI, or dotenv output with a key ledger and duplicate checks.
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Large Language Model (LLM) Usage Cost Calculator
Estimate LLM API spend from token mix, request volume, caching, retries, fixed fees, and budget caps with model price comparisons.
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MAC Address Generator
Generate MAC address batches for VM labs, fixtures, and docs with prefix control, local/unicast flags, seeded replay, and duplicate checks.
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Markdown Previewer
Preview Markdown locally with GFM or CommonMark rules, raw-HTML safety controls, heading anchors, source audits, and exportable HTML.
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Markdown Table Generator
Turn CSV, TSV, semicolon, or pipe rows into GitHub-style Markdown tables with header detection, pipe escaping, and column audits.
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Markdown to HTML Converter
Convert Markdown to HTML in your browser, review safe preview output, and catch raw HTML, external-link, parser, and size warnings before reuse.
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Meta Tag Generator
Build search and social meta tags from page facts, with canonical URL checks, robots warnings, preview image validation, and copy-ready markup.
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Microstrip Impedance Calculator
Estimate PCB microstrip impedance or solve target trace width from stackup geometry, compare IPC and Hammerstad models, and flag tolerance risks.
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Netcat Command Generator
Build netcat and ncat commands for authorized connect, listen, scan, TLS, proxy, and transfer tasks with shell quoting and warnings.
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Op-Amp Gain Calculator
Calculate op-amp gain for feedback circuits, solve Rf or input resistors, and check rail swing, bandwidth, slew rate, tolerance, and load current.
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Open Graph Tag Generator
Generate Open Graph and X card tags from page titles, URLs, images, article fields, and crawler warnings before copying head markup.
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Open Graph Tag Previewer
Preview social share cards from pasted HTML or a public URL, with Open Graph, X card, image, canonical, crawler, and platform score checks.
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OpenAPI Operation Coverage Checker
Compare OpenAPI operations against test evidence, find unmatched routes or IDs, and turn release-gate gaps into an owner-ready queue.
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Properties Converter
Convert Java .properties text into JSON, YAML, INI, env, and normalized properties output with duplicate-key, path, and type checks.
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Pull Request Cycle Time Calculator
Measure pull request cycle time from PR timestamps, compare review pickup delays and slow-tail percentiles, and spot rows that need cleanup.
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Quick Response (QR) Code Generator
Create QR codes for URLs, Wi-Fi, contacts, messages, calls, email, or events with readiness scoring, logo checks, and image downloads.
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Rate Limit Backoff Schedule Calculator
Plan retry waits for rate-limited APIs with Retry-After floors, jitter options, timeout checks, and shared-client pacing warnings.
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Regex Sample Matches Checker
Test a JavaScript regex against examples that should pass or fail, with whole-line matching, flag checks, match spans, and timeout guards.
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Regex Tester
Test a JavaScript regex against pasted text or files, inspect match spans and capture groups, catch timeout warnings, and preview replacements.
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Release Notes Generator
Turn commit lines, PR lists, or release bullets into grouped Markdown notes with parser warnings, readiness gates, and review ledgers.
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Resistor Combination Finder
Find resistor networks for a target resistance, compare E-series or custom stock, and screen nominal error, tolerance, and power stress.
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Robots.txt Generator
Generate a robots.txt draft with crawler groups, path rules, sitemap hints, import parsing, and publish warnings for safer crawl control.
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SARIF Security Findings Analyzer
Analyze SARIF logs for release-gate findings, priority rows, rule and file hotspots, severity charts, and fingerprint coverage warnings.
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SBOM Component Risk Analyzer
Review CycloneDX, SPDX, Syft, or CSV SBOM evidence, rank component risk, and separate vulnerability, license, and identity review work.
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SCSS to CSS Compiler
Compile SCSS, indented Sass, or plain CSS in your browser, then check compiled CSS, source maps, metrics, and Sass audit warnings.
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SQL Formatter
Format pasted SQL for review with dialect-aware layout, statement ledgers, parser-fallback caveats, and local file handling in your browser.
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SQL INSERT Generator
Build SQL INSERT statements from pasted rows or local CSV/TXT files, with dialect-aware quoting, inferred literals, and row and column review.
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SQLite Manager
Inspect a SQLite database in your browser, run focused SQL, verify rowid-table edits, and export rows, query history, dumps, or a copy.
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SVG Placeholder Generator
Build SVG placeholders with exact dimensions, labels, contrast warnings, preview output, and HTML or CSS snippets for layout handoff.
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Sallen-Key Filter Calculator
Calculate Sallen-Key low-pass, high-pass, or band-pass stages from real R/C values, then check f0, Q, preferred parts, GBW, and response curves.
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Secure Shell (SSH) Client Config Editor
Clean up an SSH client config in your browser, test Host wildcards, and review lint, security, directive, and diff reports before copying.
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SemVer Bump Required Checker
Check release notes and commit subjects for the required SemVer bump, compare a planned version, and review breaking, feature, fix, and neutral signals.
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Sitemap URL Extractor
Extract sitemap URLs from pasted XML, text files, or a public URL, then filter, de-duplicate, audit coverage, and export clean crawl lists.
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Slug Generator
Generate readable slugs for URLs, files, anchors, and CSS selectors from single titles or batches with Unicode, trimming, and collision checks.
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Stack Trace Signature Analyzer
Group pasted stack traces into stable fingerprints, compare frame evidence, and spot recurring failures while keeping trace text in the browser.
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TOML Converter
Turn TOML into config outputs with parse checks, path ledgers, type previews, and schema sketches so migrations are easier to audit.
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Tab-Separated Values (TSV) Converter
Turn TSV or delimiter-separated text into reviewed tables, column profiles, and typed exports with header checks and row-width warnings.
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Table Data Converter
Turn pasted tables or local text files into clean Markdown, JSON, HTML, or delimited output with header repair, previews, and formula guards.
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Test Case Generator
Turn a feature workflow into manual, Gherkin, or automation handoff cases with traceable IDs, edge coverage, and review cues.
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Test Shard Runtime Calculator
Estimate CI test shard wall time from suite size, setup tax, runner concurrency, timing coverage, target gaps, and runner-minute cost.
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Text Diff Comparator
Compare original and revised text locally, then review unified diff hunks, change ledgers, ignore-option matches, warnings, and exports.
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Thread Pool Saturation Calculator
Estimate thread pool saturation from arrival rate, task time, queue depth, wait targets, and capacity scenarios with headroom warnings.
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URL Encode and Decode Tool
Encode or decode URL text by context, compare percent escapes and plus-as-space behavior, and catch round-trip problems before copying or opening.
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URL Parser
Parse a URL or query string locally into components, query rows, masked sensitive values, length signals, and a rebuilt review URL before sharing.
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Unicode Character Lookup
Look up a character, code point, grapheme, or escape with Unicode names, U+ values, UTF bytes, normalization checks, and hidden-text warnings.
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Universally Unique Identifier (UUID) Generator
Generate UUIDs for random, name-based, or time-sortable IDs, then inspect canonical form, version markers, namespace inputs, and history.
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User Story Generator
Draft a user story from role, goal, benefit, and acceptance checks with criteria rows, boundary review, readiness warnings, and exports.
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User-Agent Parser
Parse a User-Agent string or header block into browser, OS, device, bot, token, and Client Hints evidence for support or log triage.
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Voltage Divider Calculator
Size a loaded voltage divider, solve for R1 or R2, and compare load sag, target error, power, tolerance, and E-series values.
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What Is My Browser
Identify your current browser session with support-ready browser, storage, graphics, compatibility, and privacy exposure signals plus share cautions.
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What Is My Screen Resolution
Check your screen resolution, viewport size, DPR, breakpoint fit, capture dimensions, and PPI clues from the current browser window.
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XML Diff Comparator
Compare two XML documents in your browser, catch parse errors, match repeated nodes by key or order, and review changed paths with ledgers.
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XPath Tester
Test XPath against XML or HTML in your browser, verify namespace mappings and scalar results, and copy node ledgers or runtime snippets.
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YAML Converter
Convert YAML into JSON, normalized YAML, env, INI, and properties text with local parsing, document checks, path review, and schema output.
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YAML Formatter
Format YAML in your browser with parse warnings, path rows, change deltas, and JSON output before replacing configuration text.
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YAML Validator
Check YAML text or files in your browser, find parser errors and duplicate-key risks, then inspect document counts, paths, and parsed JSON.
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cURL Command Generator
Build a paste-ready curl command for API requests, with shell-aware quoting, auth and body options, import parsing, and safety warnings.
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npm Audit Summary Analyzer
Turn npm audit JSON or CI text into a release gate, severity ledger, fix-pressure queue, charts, and remediation handoff notes.
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